The Planetarium kit was designed by Takayuki Ohira, known for his Megastar and Homestar planetarium systems in Japan. The star ball consists of 12 face pieces with data plotted for 10,000 fixed stars. Observe the northern hemisphere at a specific day and time by arranging the angle and spinning the dome! Also includes Volume 9 of Otona no Kagaku magazine. Requires: Two (2) AA batteries (not included.) 1 Each Planetarium (volume 9) GAKV09$59.99 Copyright © 2003-2009 E-Clec-Tech. All rights reserved. All other materials and logos are copyrighted by their respective owners, or companies.